Altec a 340a poweramp schematic

Page 1

If AMP PHASE INV DRIVER

INPUT .2:

I2AY7 AI2AU7
1 55v 5 180V
cggyo m ov ' 5v "
L 22" 2 . 680 7 . 5
3' 9V '49 M ; .21
I XY anon 60V X 60K 41K
- Iw
68K
I320 IK 60K
BUS
4111.
47K
.22

DRIVER
s 12AU7

Altec Lansmg A-340-A Amphf1er WAGE m

'DA3

I295? mos

a... M. Pin l Pin 3 rs. 4
V ' mm "um um . 10
V 3 mm 1mm 1. um .19
Y 3 05w 19 noon mun V
V mo 19 noon tum nu ma BLUE
V 5 nay/an '59 NC 1'? no no
v 6 ' I. no voltage measurement token with vacuum tube voltmetel;
uggg NC NC _ 3000 _ » NC We. AC you-gee measured at moo ohm per volt.
"I! RED FROM H locket connections are ehm on bottom view.
'rP-Tll. POINT. fluent-ed veluee ere Iron eocket pin to common negative.

Line voltage maintained an 111 vol for vollee reedlun.
Ila-uni tolerance on component veloee melee poeelble 0
variation at 3 I to voltage end reemence reduce.

. All covalent-Human, we! was Iced connected.

N3 40 CONNECTION.